Incandescent gas-burner.



PATENTED NOV. 6, 1906.

C. O. DRYDEN. INOANDBSGENT GAS BURNER.

APPLICATION FILED FEB-18, 1903.

rm: NORRIS PETERS cm, WAsHINGToN, n. c.

OAELIUS O. DRYDEN, OF PHILADELPHIA,PENNSYLVANIA.

INCANDESCENT GAS-BURNER- Specification of Letters Patent.

Patented'Nov. 6', 1906.

Ap licati n fil d February 18,1908. Serial No. 143,921.

I To all whom it may concern:

Be it .known that I, CAELIUs O. DRYDEN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Incandescent Gas-Burners, of which the following isa specification.

My invention relates to that class of burners desi ned for use with incandescent mantles of the VVelsbach type, the objectof my invention being to provide a burner that w1ll increase the brillianoy of the light with a minimum supply of gas, to provide for the admission of air to the burner, and to regulate such air-supply.

My invention is fully shown'm the accompanying drawings, in wh1ch- Flgure 1 is a sectional elevation of a burner made in accordance with my invention. Fig. 2 is an elevation of a portion of the same, and Fig. 3 is'a sectional plan view illustrating a detail of my invention.

My improved burner is rovided with an enlarged mixing-chamber sltuatedsome dlstance above the gas-inlet, such mIXmg-chamher having a height nearly the same as the length of tube between such inlet and the bottom'of said chamber and a dlameter approximately twice that of the tube. Ad acent to the gas-inlet th1s tube is provided with an enlarged portion open to the atmos phere, so that the entering gas acts as an 111- jector and draws in a large quantity of air for admixture therewith. Thls structure constitutes a burner that will produce a vBunsen flame of a very high intensity.

In my improved burner the normal supply of air enters at ap'oint ad acent to the gasinlet, as noted, and the two elements move together to the point of ignitlon, bemg'partially mixed in their passage to the enlarged chamber, which has been heated by the flame, in which chamber the gas and a1r are thoroughly mixed before ignition. The point of entrance of the gasandair 1s some distance below thepoint of ignition, and by employing a chimney that prevents admlssion of air at the point of 1gn1t1on a draft 1s rovided which increases the intenslty of the %unsen flame with the consequent result of increasing the incandescence of the mantle.

In the drawings herewlth, 1 represents the gas-supply pipe, having a contructed outlet of gas at this outlet is 2 nd the dischar e a g 3, tapped into the regulated by a set-screw pipe 1. Carried by the. as-su l i e; 1 and'by preference threadei l onto hla s riie "is a tube 5, Which leads from'saidpipeto the mixing-chamber. E This tube is provided with an enlarged'portion 6 at its lower endimmediately adjacent to the outlet of the gas-supply pipe 1, and this enlargedportionhasia perforated lower wall 7 that is-brought around .said pipe,=which-serves to admitta large quantity of air drawninby'the'flow of gas, mingling withthe same-in the passage to the -mixingohamber. This tube projects upwardly for some distance and carries at its upper end the elongated and-contracted extension 8 of a miXing-chamber'Q; the top of which chamberhas a cap 10 with 'the'usual wire-gauze diaphragm 11. As ordinarily made, the burner-caps have a Wide flange extending over the edge of the mining-chamber,

and the eflect of this is to cause the flame,

particularly-when emerging from the burner with any-pressure, to keep to the center of the burner and awayfromthe mantle. 1 :It is obvious, however, that the nearerthe flame is .to the mantle the greateris the-incandescence, and to: rovide-forthis-thefl-ange 12--is duced inwidt ,so thatit does not.extend:re farther than the inner edge of vthe 'mixingchamber wall. To further divert the flame, I provide an enlarged spreader-plate 13, which is heldto the gauze by an=ordinary rivet 14. The parts of the burner when fitted together are preferably air-tight'in their lowerportion, so that the only air admitted to the burner for. use at the'point ofignition is that which enters the tube 5- adjacentto the gas-inlet.

This burner is-intended tobezused witha suitable chimney of. the ordinary type,-as shown at 15 inFig. 1, and this chimneyfits snugly into the gallery lfizof .theburnentop preventing any ingress of air at'this point. This gallery 16 is provided with acupshaped depending portion 17,- arranged below the mixing-chamber and engaging the extension 8 A sleeve 18 is arrangedbetween this cup-shapedmember and a rib 19onithe tube 5, Which servesto keep the partsin proper relation to each other. member is provided withslots-20 and incloses a similarly-shapedcasing 21-, also providedwith slots 22, which inner member is. movable with respect to the outer chambenbeing provided with a handle 23. When,'therefore, therslot's This cup-shaped air.

22 are caused to coincide with the slots 20, as l shown, for instance, in Fig. 3, air will be admitted to the exterior of the mixing chamber and communicate with the mantle 24, supported above the same. (Shown by dotted lines in Fig. 1.) The burner structure is provided with the usual screw 25 to hold the rod supporting the mantle. This method of supplying air is particularly advantageous in incandescent burners of this type. For instance, by having the air admitted only at, the point adjacent to the gas-inlet,which air enters in unrestricted measure, and by employing a chimney which inclos'es the entire lower part of the burner and prevents the ingress of air at this point the draft becomes so great that an intenseBunsenflameis created. Thisflame,in some instances due to imperfect gas-pressure or other causes, has a tendency to blow directly through the mantle, preventing proper combustion of the air and gas and resulting in a diminished amount of incandescence. To prevent a condition of this character, air may be admitted through the openings 20 and 22 by moving the casing 21, causing said openings to register, and the air thus admitted serves to diminish the force of the draft caused by the entrance of the air at the point 7 to the closed burner structure. This additional air, entering through the slots 20 and 22 at a point just below the mixing-chamber and on the outside of the same, has a further effect of'increasing the incandescence of the mantle, as such air becomes highly heated immediately outside of the mixing-chamber, combines with the burning mixture of gas and air emerging therefrom, and burns with a great heat directly at the point most desired. As soon as the condition causing the excessive draft is overcome, however, the air-supply may be cut off at the point below the mixingchamber and the supply of air introduced at the one point adjacent to the gas-inlet.

The structure forming the subject of my invention, as will be noted from. the drawings, is much longer than the usual burners of this type, the mixing-chamber being nearly if not quite as long as the tube between said mixing-chamber and the air and gas inlet, and I find in practice that this construction enables me to use much less gas than with a structure having the burner close to the inlet of gas and Having thus described my invention, I claim and desire to secure by Letters Patent 1. The combination in a gas-fed illuminating structure employing a refractory mantle, of a burner, an elongated tubular body supporting said burner, a mantle suitably supported and inclosing said burner, a combined air and gas inlet communicating with said tubular body, a valve for regulating the inlet of gas, said tubular body being enlarged adjacent to the burner to form a mixing-chamber for said air and gas, a gallery for said burnerhaving a depending portion encircling the tubular body and forming a chamber, and a chimney supported by said gallery and inclosing the mantle, said gallery'being substantially closed at the bottom to prevent the direct access of air around the mantle which enters only through the depending portion, said elongated tubular body and chimney serving to draw in the charge of air and gas passing to the burner under such pressure as to increase the Bunsen flame and heighten the incandescence of the mantle.

2. The combination in a gas-fed illuminating structure employing a refractory mantle, of a burner, an elongated tubular body supporting said burner, a mantle suitably sup ported and inclosing said burner, said elongated body being enlarged to form a mixingchamber, a combined air and gas inlet at the bottom of said tube, a valve for regulating the inlet of gas, a allery for said burner, a chimney fitting saicT gallery and inclosing the mantle, said gallery being substantially closed at the bottom to prevent the direct access of air and having a cup-shaped de ending portion forming an air-chamber elow the gallery and open to the space between the mantle and chimney, and means for regulating the admission of air to said chamber.

3. The combination in a'gas-fed illuminating structure employing a refractory mantle, of a burner, an elongated tubular body supporting said burner, a mantle suitably supported and inclosing said burner, said elongated body being enlarged to form a mixingchamber, a combined air and gas inlet at the bottom of said tube, a valve for regulating the inlet of gas, a gallery for said burner, a chimney fitting said gallery and inclosing the mantle, said gallery being substantially closed at the bottom to prevent the direct access of air, said elongated tube and chimney serving to draw in the charge of air and gas under such pressure as to increase the Bunsen fiame and heighten the incandescence of the mantle, a cup-shaped portion depending from the gallery and forming a supplemental air-chamber open to the space between the mantle and chimney, and means for controlling the admission of air to said supplemental chamber.

4. The combination in a gas-fed illuminating structure employing a refractory mantle, of a burner, an elongated tubular body sup porting said burner, a mantle suitably sup ported and inclosing said burner, said elongated body being enlarged to form a mixing chamber and having a tube depending from said mixing-chamber, a combined air and gas inlet at the bottom of said tube, a valve for regulating the inlet of gas, a gallery for said burner, a chimney fitting said gallery and inclosing the mantle, said gallery being substantially closed at the bottom to prevent the direct access of air, a cup-shaped casing forming a supplemental air-chamber depending In testimony whereof I have signed my from said gallery and open to the space bename to this specification in the presence of 10 tween 1thle1 magntlei1 and chimney, said suppletwo subscribing witnesses.

menta 0 am eravin a series 0 o enin s,

and a movable membe combined tlibrewih DRYDEW and having registering openings whereby the Witnesses: supply of air to said supplemental chamber I MURRAY 0. BOYER, may be regulated. i J 0s. H. KLEIN. 

